NASA's Perseverance Mars rover captures images of what may have been a wild river

New images from NASA's Perseverance Mars rover may have revealed what was once a river on the red planet. 

The river, which the agency said was deeper and faster-moving than scientists have ever seen evidence for, was part of a network of waterways that flowed in Jezero Crater. 

The rover has been exploring the crater since landing there over two years ago, in the hopes of eventually seeking out signs of ancient microbial life. 

Perseverance has been examining a top of an 820-foot-tall pile of sedimentary rock which has features that are suggestive of water.

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Using hundreds of images from the rover's Mastcam-Z instrument, mosaics revealed coarse sediment grains and cobbles.

"Those indicate ...